bellaswiss1
bellaswiss1 bellaswiss1
  • 05-08-2019
  • Mathematics
contestada

Sin30=cos(2x) then x=

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Аноним Аноним
  • 05-08-2019

Answer:

x = 30.

Step-by-step explanation:

Use the identity sin A = cos (90 - A).

So sin 30 = cos (90 - 30) = cos 60.

cos 2x = cos 60

so x = 30.

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